Do a search on Google and you will find this error message spread over many websites. It is a problem with a particular version of Magpie when it cannot access the RSS feed - it just carries on as though it could, which results in errors further on rather than a properly handled exception.
Questions I have not seen asked:
- If you clear the cache, does it still do the same thing?
- Does it have the same error with all feeds, rather than just this one feed?
The message you are getting is a 'warning'. If warnings are now being displayed when previously they were not, then you probably need to change some PHP settings at the head of your application.
-- JJ